907-55-1Relevant academic research and scientific papers
Reactions of 5-amino-1,2-azoles with aromatic and heterocyclic o-chloroaldehydes: [1+1] versus [2+1] cyclocondensation
Abramov, Michael A,Ceulemans, Erik,Jackers, Carine,Van Der Auweraer, Mark,Dehaen, Wim
, p. 9123 - 9129 (2007/10/03)
5-Amino-1,2-azoles react with aromatic and heterocyclic aldehydes, having reactive halogen in ortho-position, and yield pyrazolo[3,4-b;2,3-b]quinolines, bispyrazolo[3,4-b;4′,3′-e]pyridines and their heterocyclic analogs, respectively as [1+1] or [2+1] con
Reaction of 5-amino-4-formyl-3-methyl(or phenyl)-1-phenyl- 1H-pyrazoles with active methylene compounds: Synthesis of fused heterocyclic rings
Ahluwalia, Vinod K.,Dahiya, Aruna,Carg, Vijay K.
, p. 88 - 90 (2007/10/03)
A convenient one-pot synthesis of fused heterocyclic ring systems, pyrazolo[3',4':5,6]pyrido[2,3-d]pyrimidines 3a-d, dipyrazolopyridines 4a-b, pyrazolo[3,4-]quinolines 5a-b and 6a-b and pyrazolo[3,4-]pyridines 7a-b, has been achieved by condensation of 5-amino-4-formyl-3-methyl(or phenyl)-1-phenyl-1H-pyrazoles 2a-b with 1,3-diaryl-4,6-dioxo-2-thioxo-hexahydropyrimidines, 3-methyl-1-phenyl-1H-2-pyrazolin-5-one, dimedone, cyclohexanone and 3-acetylpyridine, respectively.
